通过注意力增强的多式联络时间网络预测车辆碰撞中乘客反应曲线
Wenjie Wang1, Xiaoyi Tai1, Chang Zhou1
1School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; National Engineering Research Center of Automotive Power and Intelligent Control, Shanghai Jiao Tong University, Shanghai 200240, PR China.
Accident; analysis and prevention
|June 18, 2025
概括
这项研究引入了注意力增强的多模式时间网络 (AMTN),用于预测车辆乘客的碰撞反应. 这种新的方法准确地预测了身体各个区域的碰撞反应曲线,改善了车辆安全的发展.
科学领域:
- 汽车工程 汽车工程
- 计算力学 计算力学 计算力学
- 机器学习 机器学习
背景情况:
- 准确预测乘客碰撞反应对于车辆安全设计和减少物理测试至关重要.
- 现有的机器学习模型在多式联运数据集成和多任务时间预测方面扎.
研究的目的:
- 开发一种全新的增强注意力的多模式时间网络 (AMTN),用于预测乘客在多个身体区域的碰撞反应曲线.
- 在碰撞安全分析中解决多式联运数据集成和多任务时间预测方面的挑战.
主要方法:
- AMTN使用特征提取模块集成数值参数和碰撞脉冲.
- 交叉注意力机制融合了多式联络特征,由经过修改的时间卷积网络 (TCN) 解码,具有自我注意力.
- 动态适应性损失和多个输出层使多任务预测和优先学习成为可能.
主要成果:
- 在11个事故响应曲线中,AMTN获得了0.835的平均ISO评级,关键区域超过0.9.
- 超过0.8的ISO评级意味着预测曲线与参考曲线的密切匹配.
- 实验结果证实了模型学习数据特征并产生准确预测的能力.
结论:
- 拟议的AMTN推进了多式联机深度学习,以实现碰撞安全,从而实现高效,准确和可解释的多任务曲线预测.
- 这种方法为数据驱动的车辆安全开发提供了重要的工程价值,提高了效率和质量.
相关概念视频
Predicting Reaction Outcomes
Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
Impulse
According to Newton’s second law of motion, the rate of change of the momentum of an object is the net external force acting on it. The total change in momentum between two timepoints thus depends on both the external force acting on it and the time over which it acts. Describing this mathematically, the total change of an object’s motion is proportional to the force vector and the time over which it is applied. This product is called impulse.
Additionally, it can be shown that the total...
Additionally, it can be shown that the total...
Types of Collisions - II
When two or more objects collide with each other, they can stick together to form one single composite object (after collision). The total mass of the object after the collision is the sum of the masses of the original objects, and it moves with a velocity dictated by the conservation of momentum. Although the system's total momentum remains constant, the kinetic energy decreases, and thus such a collision is an inelastic collision. Most of the collisions between objects in daily life are...
Elastic Collisions: Case Study
Elastic collision of a system demands conservation of both momentum and kinetic energy. To solve problems involving one-dimensional elastic collisions between two objects, the equations for conservation of momentum and conservation of internal kinetic energy can be used. For the two objects, the sum of momentum before the collision equals the total momentum after the collision. An elastic collision conserves internal kinetic energy, and so the sum of kinetic energies before the collision equals...
Collisions in Multiple Dimensions: Problem Solving
In multiple dimensions, the conservation of momentum applies in each direction independently. Hence, to solve collisions in multiple dimensions, we should write down the momentum conservation in each direction separately. To help understand collisions in multiple dimensions, consider an example.
A small car of mass 1,200 kg traveling east at 60 km/h collides at an intersection with a truck of mass 3,000 kg traveling due north at 40 km/h. The two vehicles are locked together. What is the...
A small car of mass 1,200 kg traveling east at 60 km/h collides at an intersection with a truck of mass 3,000 kg traveling due north at 40 km/h. The two vehicles are locked together. What is the...
Multi-input and Multi-variable systems
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...
In the absence of...


